Upgrade your desktop system to an high speed SSD with the latest SATA III interface (6Gbs). Uses a single PCIe 2.0 x2 slot or larger for data transfer speeds up to 550 MB/sec. When configured with two drives, data transfer speeds up to 800 MB/sec. 2.5" SSD connects via SATA III interface. Additional Auxiliary SATA III connector for expansion to another drive.